Uydfors



2 Sheets-Sheet 1 Inn's/97oz: 706/4 1/0/1944 J. LYDFORS TENS TRANSFER DEVICE IN CALCULATING MECHANISMS Filed Jan. 20', 1948 Jan. 9, 1951 J. LYDFORS 2,537,471

TENSTRANSFER DEVICE IN CALCULATING MECHANISMS Filed Jan. 20, 1948 2 Sheets-Sheet 2 Patented Jan. 9, 1951 TENSI TRANSFERDEVICE IN CALCULATING MEGHANISMS J ohn Lydfors,'Eket, Sweden, assigncr to Aktiebol'agct Di'xma,Malmo, Sweden Application'January 1948', Serial No.3,357

In- Swedcn. April 6, 1946 Section 1, Public Law 69.0,. August8, 1946 Patent expires April 6', 1966 The present invention. relates toa tens trans for device in. totalizers. The objectof the invention is to provide a transfer deviceparticularly suited to rapidly operating. calculating machines, wherein. the transfer cycle isto be terminated within a. very short period. of. time. Here, greatdemands. are placed on accuracy in opera.- tion of the transfer members.

According to the invention, the effective space of time for the transfer cycle has been. further shortened: in. comparison with the earlier constructions in the relevant. art. The. invention. is principally distinguished by the feature that the transfer members are adapted during a short period of time tocooperate with an impulse wheel arranged to besh-ifted from an inoperative into an operative position, said impulse wheel being in driving connection with the totalizer.

The accompanyin drawings illustrate by way of example an embodimentof the invention.

Fig. 1 shows a transfer device. in cross. section at right. angles to the shafts of the totali'zer. Fig. 2 is a plan view of the same mechanism with. certain portions cut away.

Displaceably mounted. on a rotating shaft I is an actuator drum 2, which is ad'aptedto be driven in. the rotary movement of the shaft. The actuator drum 2. comprises a series of slotted discs 3- arranged' in. a manner known per se. and? provided with a guide slot 4 for the adjustment of read-in pins 5, which are radially displaceable in pin carriers 6 alternating with the slotted discs. 3 The'angular adjustment of the-slotted discs for the displacement of the read-in pins from an inoperative into an operative position may be effected in an arbitrary suitable manner and has no bearing on the inventive idea. Said read-in pins of each disc 3 cooperate, during the rotation of the actuator drum 2, each with one of a series of gear wheels 1, which gear 3 Claims. (01.2.235-137') wheels are rotatable on a common shaft 8. This shaft may either be stationary or adapted to be displaced by a translatory movement, so that the gear wheels 1 may be moved out of and into the path of the read-in pins 5. Each of the wheels I is in constant driving connection with one of a series of gear wheels 9 arranged as sun wheels, said series of wheels being mounted on a shaft l 0. Arranged as a planet wheel for each wheel 9 is an impulse gear wheel II, which is mounted on a pin I2 secured in an arm l3 swingable about the shaft [0. The arm I3 is constituted by a bell crank, the end portion of which forms a tooth l4 cooperating with a positioning and locking arm l6 mounted on a shaft 15. A

tion. of the drum 2.

spring i l tends to turn the latter arm in a counter-clockwise direction. The mounting member of" the arm i3 is provided with two lugs l8 and 49 adapted each to cooperate with a tens transfer cam 2i} and 2!, respectively. These cams are arranged each on a hub portion 20' and 2|, respectively, the hub 20' being connected to a calculating wheel 22 and the hub 2! to a calculating wheel 23. The first-mentioned calculating wheel 22' is rotatable on a. shaft 24.

and the calculating wheel 23 is mounted on a shaft 25. These two shafts each carry. a series ofwheels constituting two totalizers, one. for positive and another for negative operations, said total-izers being adaptedalternately to be brought into driving connection with the wheels 9.. To this end the shafts 24 and25 are mounted in a cradle device 25, which is swingable about ashaft '21.

The cradle device is adjustable in such manner that'one of the totalizers is always indriving connection with the sun wheels 9. According to the example, the calculating wheels 23 are shown in their operative position. The

mechanism according to the example shown is formed for one reading-in operation or. revolu- Here, the. read-in is trans.- ferred over the gear wheels I and the sun wheels 9 to the totali'zer 22, 23.

In the position shown in Fig. l, the arm 13 This has been eftation thereof in a counter-clockwise direction, into engagement with the lug Is on the arm I3, which latter has thus been brought by a rotary movement in a clockwise direction into the locking position shown. In this position.

the teeth of the wheel H are in the path of a transfer tooth 28 on a transfer drum 29. The latter is mounted on a shaft 36 and adapted to rotate always in a clockwise direction in synchronism with the actuator drum 2 carrying the read-in pins 5. After the transfer tooth 28 has been brought into engagement with a tooth on the wheel H and has driven the latter by one tooth pitch, the arm I3 is returned into an upper position, in which only the wheel ll meshes with the sun wheel 9. is effected by cooperation between a lug 3| on a hub portion 32 rigidly connected with the transfer drum 29 and a pin 33 on the arm l3. Before the lug 3| comes into engagement with said pin, a cam 34 arranged on the same hub portion 32 actuates a pin 35 on the lockingarm,

This return movement H5, in a manner such that this arm is swung in a clockwise direction out of locking engagement withthe tooth M on the arm 13, whereby this arm is released for the return movement under the action of the lug 3!. When the wheel H takes up an inoperative position, the lower edge of the tooth l4 bears on the upper edge of a portion 36 of the locking arm It formed as a saw tooth.

A positioning member 3'! cooperates with the teeth of the wheel 9, so that all of the gear wheels are stopped in their adjusted position. The member 31 is arranged on an arm 38, which is swingable about a shaft 39 and arranged to bear on the sun wheel under the influence of a spring 40. The shafts of the totalizer are mounted in two head plates 4| and 42. For reading the totalizer, the calculating wheels 23 are provided with indicators 23', which always indicate the result, since the two totalizers are in mesh with one another.

It is of great importance that the impulse wheel I l is in such operative position as to permit of being actuated immediately by the transfer lug 28. When shifted from the inoperative into the operative position, the wheel rolls on the sun Wheel 9 and thus rotates in a clockwise direction. One of the teeth of the wheel H thus moves to meet the lug 28. This involves a saving of time, and a transfer movement, reaching the totalizers, can take place without any loss of time. The effective space of time for the running transfer, i. e. the transfer cycle over a part of or over the whole capacity of the totalizer, thus becomes extremely shortened in comparison with the corresponding period of time in the constructions hitherto known. When the running transfer is to be performed, the lugs 28 on the drum 29 successively take up the position shown, unless they have already been advanced such a step that the planet wheels moving into the op erative position by rolling on the sun wheel 9 will be stopped, and the rotation of said Wheels will be reversed by means of the lugs 28 even if the drum 29 is standing still. The lugs 29 are.

located along a helical line having a very great pitch.

I claim:

1. In a tens transfer device for totalizers having two sets of registering wheels, respectively for positive and negative operations, the provision of a toothed impulse wheel, a sun wheeling meshing with said impulse wheel and with one set of the registering wheels at any one time, an actuator drum having a driving connection with said sun wheel, a shaft whereon said sun wheel is mounted for rotation, an arm, pivoted on said shaft, whereon said impulse wheel is mounted for rotation, a pair of lugs on said arm each posi- .tioned in the path of a cam surface provided on one of said registering wheels, said cams being adapted to cooperate with said lugsand thereby shift said arm from an inoperative to an operative position, and a transfer drum rotatable in one direction only, a transfer tooth on said drum adapted to engage with said impulse wheel when said arm is in operative position, the relative and respective directions of rotation and pivoting being so arranged that said impulse wheel is moved in the same rotative direction about its own shaft and the sun wheel shaft as said transfer drum about its shaft while said arm pivots from inoperative to operative position and while said sun wheel is motionless, a tooth of said impulse wheel being rotatively moved in a direction opposite to the direction of rotative movement of said transfer tooth;

2. A device according to claim 1 comprising a latch member adapted to lock said arm in operative position, and a cam surface on said transfer drum adapted to actuate said latch member.

3. A device according to claim 1 comprising a cam surface on said transfer drum arranged and adapted to actuate said arm from operative to inoperative position.

' JOHN LYDF'ORS.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 1,433,908 Pentecost et a1 Oct. 31, 1922 1,853,054 Horton Apr. 12, 1932 1,853,791 Wheelbarger i Apr. 12, 1932 2,088,355 Hellgren July 16, 1935 2,101,818 Overbury Dec. 7, 1937 2,221,861 Butler Nov. 19, 1940 2,222,164 Avery Nov. 19, 1940 2,279,444 Christie Apr. 14, 1942 2,285,427 Friden June 9, 1942 FOREIGN PATENTS Number Country Date 586,386 Germany Oct. 20, 1933 

